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  ON Semiconductor Electronic Components Datasheet  

MC74ACT640 Datasheet

Octal 3-State Inverting Transciever

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MC74ACT640
Octal 3-State Inverting
Transciever
The MC74ACT640 octal bus transceiver is designed for
asynchronous two-way communication between data buses. The
device transmits data from bus A to bus B when T/R = HIGH, or from
bus B to bus A when T/R = LOW. The enable input can be used to
disable the device so the buses are effectively isolated.
Features
Bidirectional Data Path
A and B Outputs Sink 24 mA/Source −24 mA
TTL Compatible Inputs
These are Pb−Free Devices
VCC OE B0 B1 B2 B3 B4 B5 B6 B7
20 19 18 17 16 15 14 13 12 11
www.onsemi.com
SOIC−20W
DW SUFFIX
CASE 751D
1
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 5 of this data sheet.
1 2 3 4 5 6 7 8 9 10
T/R A0 A1 A2 A3 A4 A5 A6 A7 GND
Figure 1. Pinout: 20−Lead Packages Conductors
(Top View)
PIN ASSIGNMENT
PIN FUNCTION
A0−A7
OE
Side A Inputs or 3-State Outputs
Output Enable Input
T/R Transmit/Receive Input
B0−B7
Side B Inputs or 3-State Outputs
TRUTH TABLE
OE T/R
HX
LH
LH
LL
LL
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Applied
Inputs
X
H
L
H
L
Valid
Direction
I/PO/P
X
A to B
A to B
B to A
B to A
Output
X
L
H
L
H
© Semiconductor Components Industries, LLC, 2015
March, 2015 − Rev. 4
1
Publication Order Number:
MC74ACT640/D


  ON Semiconductor Electronic Components Datasheet  

MC74ACT640 Datasheet

Octal 3-State Inverting Transciever

No Preview Available !

MC74ACT640
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC
VIN
VOUT
IIK
IOK
IOUT
ICC
IGND
TSTG
TL
TJ
qJA
MSL
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND) (Note 1)
DC Input Diode Current
DC Output Diode Current
DC Output Sink/Source Current
DC Supply Current, per Output Pin
DC Ground Current, per Output Pin
Storage Temperature Range
Lead temperature, 1 mm from Case for 10 Seconds
Junction Temperature Under Bias
Thermal Resistance (Note 2)
Moisture Sensitivity
−0.5 to +7.0
−0.5 to VCC +0.5
−0.5 to VCC +0.5
±20
±50
±50
±50
±100
*65 to )150
260
140
65.8
Level 1
V
V
V
mA
mA
mA
mA
mA
_C
_C
_C
_C/W
FR
VESD
Flammability Rating
ESD Withstand Voltage
Oxygen Index: 30% − 35%
Human Body Model (Note 3)
Machine Model (Note 4)
Charged Device Model (Note 5)
UL 94 V−0 @ 0.125 in
> 2000
> 200
> 1000
V
ILatchup Latchup Performance
Above VCC and Below GND at 85_C (Note 6)
±100
mA
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. IOUT absolute maximum rating must be observed.
2. The package thermal impedance is calculated in accordance with JESD 51−7.
3. Tested to EIA/JESD22−A114−A.
4. Tested to EIA/JESD22−A115−A.
5. Tested to JESD22−C101−A.
6. Tested to EIA/JESD78.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min Typ Max Unit
VCC
Vin, Vout
TA
tr, tf
DC Input Voltage (Referenced to GND)
DC Input Voltage, Output Voltage (Referenced to GND)
Operating Temperature, All Package Types
Input Rise and Fall Time (Note 8)
4.5 5.5 V
0 VCC
−40 25 +85
V
°C
VCC = 4.5 V
VCC = 5.5 V
0
0
10 10 ns/V
8.0 8.0
IOH Output Current − High
−24 mA
IOL Output Current − Low
24 mA
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
7. Unused Inputs may not be left open. All inputs must be tied to a high voltage level or low logic voltage level.
8. Vin from 0.8 V to 2.0 V; refer to individual Data Sheets for devices that differ from the typical input rise and fall times.
www.onsemi.com
2


Part Number MC74ACT640
Description Octal 3-State Inverting Transciever
Maker ON Semiconductor
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MC74ACT640 Datasheet PDF






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